The coupled effects of salt-spray corrosion, electrical current and mechanical load on the electrical and fatigue properties of COG assembly

• Autores: Fan Li, Wenguo Zhang, Lilan Gao, Hong Gao
• Localización: Microelectronics reliability, ISSN 0026-2714, Nº. 66, 2016, págs. 92-97
• Idioma: inglés
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  • Abstract It is well-known that chip-on-glass (COG) assembly working in the coastal areas is often subjected to the coupled effects of salt-spray corrosion, electrical current and cyclic mechanical loading in service. Therefore, the fatigue life and electrical property of COG assembly undergoing the coupled loads of salt-spray corrosion, electrical current and cyclic mechanical loading have been studied in the present work. It is found that the relative resistance of COG assembly increases with the increase of salt-spray corrosion time. Moreover, the salt-spray corrosion time has a great influence on the resistance variation during the fatigue process. Simultaneously, the fatigue life of the COG assembly decreases with the increasing corrosion time. Finally, Miner's linear damage rules could be used to define the damage of COG assembly caused by the salt-spray corrosion.